No caching on Digital Unix 3.2c

I have compiled squid-1.1.6 on FreeBSD and Digital Unix and while FreeBSD
works fine, and DU one is working just like proxy - no caching is done.
ICP request from FreeBSD sibling work too. They have same squid.conf
files (exept for "cache_host" sibling settings) There are no error
messages in logs even with setting ALL,9.